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1812924b CW |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * SGI UV Broadcast Assist Unit definitions | |
7 | * | |
8 | * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved. | |
9 | */ | |
10 | ||
05e4d316 PA |
11 | #ifndef _ASM_X86_UV_UV_BAU_H |
12 | #define _ASM_X86_UV_UV_BAU_H | |
1812924b CW |
13 | |
14 | #include <linux/bitmap.h> | |
15 | #define BITSPERBYTE 8 | |
16 | ||
1812924b | 17 | /* |
b194b120 CW |
18 | * Broadcast Assist Unit messaging structures |
19 | * | |
1812924b CW |
20 | * Selective Broadcast activations are induced by software action |
21 | * specifying a particular 8-descriptor "set" via a 6-bit index written | |
22 | * to an MMR. | |
23 | * Thus there are 64 unique 512-byte sets of SB descriptors - one set for | |
24 | * each 6-bit index value. These descriptor sets are mapped in sequence | |
25 | * starting with set 0 located at the address specified in the | |
26 | * BAU_SB_DESCRIPTOR_BASE register, set 1 is located at BASE + 512, | |
27 | * set 2 is at BASE + 2*512, set 3 at BASE + 3*512, and so on. | |
28 | * | |
29 | * We will use 31 sets, one for sending BAU messages from each of the 32 | |
b8f7fb13 | 30 | * cpu's on the uvhub. |
1812924b CW |
31 | * |
32 | * TLB shootdown will use the first of the 8 descriptors of each set. | |
33 | * Each of the descriptors is 64 bytes in size (8*64 = 512 bytes in a set). | |
34 | */ | |
35 | ||
b194b120 | 36 | #define UV_ITEMS_PER_DESCRIPTOR 8 |
50fb55ac | 37 | /* the 'throttle' to prevent the hardware stay-busy bug */ |
b8f7fb13 | 38 | #define MAX_BAU_CONCURRENT 3 |
b194b120 CW |
39 | #define UV_CPUS_PER_ACT_STATUS 32 |
40 | #define UV_ACT_STATUS_MASK 0x3 | |
41 | #define UV_ACT_STATUS_SIZE 2 | |
0e2595cd | 42 | #define UV_ADP_SIZE 32 |
b194b120 CW |
43 | #define UV_DISTRIBUTION_SIZE 256 |
44 | #define UV_SW_ACK_NPENDING 8 | |
b194b120 CW |
45 | #define UV_NET_ENDPOINT_INTD 0x38 |
46 | #define UV_DESC_BASE_PNODE_SHIFT 49 | |
47 | #define UV_PAYLOADQ_PNODE_SHIFT 49 | |
48 | #define UV_PTC_BASENAME "sgi_uv/ptc_statistics" | |
e8e5e8a8 CW |
49 | #define UV_BAU_BASENAME "sgi_uv/bau_tunables" |
50 | #define UV_BAU_TUNABLES_DIR "sgi_uv" | |
51 | #define UV_BAU_TUNABLES_FILE "bau_tunables" | |
52 | #define WHITESPACE " \t\n" | |
b194b120 | 53 | #define uv_physnodeaddr(x) ((__pa((unsigned long)(x)) & uv_mmask)) |
b8f7fb13 CW |
54 | #define UV_ENABLE_INTD_SOFT_ACK_MODE_SHIFT 15 |
55 | #define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHIFT 16 | |
e8e5e8a8 | 56 | #define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD 0x0000000009UL |
12a6611f CW |
57 | /* [19:16] SOFT_ACK timeout period 19: 1 is urgency 7 17:16 1 is multiplier */ |
58 | #define BAU_MISC_CONTROL_MULT_MASK 3 | |
59 | ||
60 | #define UVH_AGING_PRESCALE_SEL 0x000000b000UL | |
61 | /* [30:28] URGENCY_7 an index into a table of times */ | |
62 | #define BAU_URGENCY_7_SHIFT 28 | |
63 | #define BAU_URGENCY_7_MASK 7 | |
64 | ||
65 | #define UVH_TRANSACTION_TIMEOUT 0x000000b200UL | |
66 | /* [45:40] BAU - BAU transaction timeout select - a multiplier */ | |
67 | #define BAU_TRANS_SHIFT 40 | |
68 | #define BAU_TRANS_MASK 0x3f | |
b194b120 CW |
69 | |
70 | /* | |
71 | * bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1 | |
72 | */ | |
dc163a41 IM |
73 | #define DESC_STATUS_IDLE 0 |
74 | #define DESC_STATUS_ACTIVE 1 | |
75 | #define DESC_STATUS_DESTINATION_TIMEOUT 2 | |
76 | #define DESC_STATUS_SOURCE_TIMEOUT 3 | |
1812924b | 77 | |
b194b120 | 78 | /* |
e8e5e8a8 | 79 | * delay for 'plugged' timeout retries, in microseconds |
b8f7fb13 | 80 | */ |
e8e5e8a8 | 81 | #define PLUGGED_DELAY 10 |
b8f7fb13 CW |
82 | |
83 | /* | |
84 | * threshholds at which to use IPI to free resources | |
85 | */ | |
e8e5e8a8 | 86 | /* after this # consecutive 'plugged' timeouts, use IPI to release resources */ |
b8f7fb13 | 87 | #define PLUGSB4RESET 100 |
e8e5e8a8 CW |
88 | /* after this many consecutive timeouts, use IPI to release resources */ |
89 | #define TIMEOUTSB4RESET 1 | |
90 | /* at this number uses of IPI to release resources, giveup the request */ | |
91 | #define IPI_RESET_LIMIT 1 | |
92 | /* after this # consecutive successes, bump up the throttle if it was lowered */ | |
93 | #define COMPLETE_THRESHOLD 5 | |
b8f7fb13 | 94 | |
b194b120 CW |
95 | /* |
96 | * number of entries in the destination side payload queue | |
97 | */ | |
b8f7fb13 | 98 | #define DEST_Q_SIZE 20 |
b194b120 CW |
99 | /* |
100 | * number of destination side software ack resources | |
101 | */ | |
dc163a41 | 102 | #define DEST_NUM_RESOURCES 8 |
1812924b | 103 | #define MAX_CPUS_PER_NODE 32 |
b194b120 CW |
104 | /* |
105 | * completion statuses for sending a TLB flush message | |
106 | */ | |
b8f7fb13 CW |
107 | #define FLUSH_RETRY_PLUGGED 1 |
108 | #define FLUSH_RETRY_TIMEOUT 2 | |
109 | #define FLUSH_GIVEUP 3 | |
110 | #define FLUSH_COMPLETE 4 | |
1812924b | 111 | |
e8e5e8a8 CW |
112 | /* |
113 | * tuning the action when the numalink network is extremely delayed | |
114 | */ | |
115 | #define CONGESTED_RESPONSE_US 1000 /* 'long' response time, in microseconds */ | |
116 | #define CONGESTED_REPS 10 /* long delays averaged over this many broadcasts */ | |
117 | #define CONGESTED_PERIOD 30 /* time for the bau to be disabled, in seconds */ | |
118 | ||
b194b120 CW |
119 | /* |
120 | * Distribution: 32 bytes (256 bits) (bytes 0-0x1f of descriptor) | |
121 | * If the 'multilevel' flag in the header portion of the descriptor | |
1812924b CW |
122 | * has been set to 0, then endpoint multi-unicast mode is selected. |
123 | * The distribution specification (32 bytes) is interpreted as a 256-bit | |
124 | * distribution vector. Adjacent bits correspond to consecutive even numbered | |
125 | * nodeIDs. The result of adding the index of a given bit to the 15-bit | |
126 | * 'base_dest_nodeid' field of the header corresponds to the | |
b194b120 CW |
127 | * destination nodeID associated with that specified bit. |
128 | */ | |
b8f7fb13 CW |
129 | struct bau_target_uvhubmask { |
130 | unsigned long bits[BITS_TO_LONGS(UV_DISTRIBUTION_SIZE)]; | |
1812924b CW |
131 | }; |
132 | ||
b194b120 | 133 | /* |
b8f7fb13 | 134 | * mask of cpu's on a uvhub |
b194b120 | 135 | * (during initialization we need to check that unsigned long has |
b8f7fb13 | 136 | * enough bits for max. cpu's per uvhub) |
b194b120 | 137 | */ |
1812924b CW |
138 | struct bau_local_cpumask { |
139 | unsigned long bits; | |
140 | }; | |
141 | ||
142 | /* | |
143 | * Payload: 16 bytes (128 bits) (bytes 0x20-0x2f of descriptor) | |
144 | * only 12 bytes (96 bits) of the payload area are usable. | |
145 | * An additional 3 bytes (bits 27:4) of the header address are carried | |
146 | * to the next bytes of the destination payload queue. | |
147 | * And an additional 2 bytes of the header Suppl_A field are also | |
148 | * carried to the destination payload queue. | |
149 | * But the first byte of the Suppl_A becomes bits 127:120 (the 16th byte) | |
150 | * of the destination payload queue, which is written by the hardware | |
151 | * with the s/w ack resource bit vector. | |
152 | * [ effective message contents (16 bytes (128 bits) maximum), not counting | |
153 | * the s/w ack bit vector ] | |
154 | */ | |
155 | ||
b194b120 CW |
156 | /* |
157 | * The payload is software-defined for INTD transactions | |
158 | */ | |
1812924b CW |
159 | struct bau_msg_payload { |
160 | unsigned long address; /* signifies a page or all TLB's | |
161 | of the cpu */ | |
162 | /* 64 bits */ | |
163 | unsigned short sending_cpu; /* filled in by sender */ | |
164 | /* 16 bits */ | |
165 | unsigned short acknowledge_count;/* filled in by destination */ | |
166 | /* 16 bits */ | |
167 | unsigned int reserved1:32; /* not usable */ | |
168 | }; | |
169 | ||
170 | ||
b194b120 CW |
171 | /* |
172 | * Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor) | |
173 | * see table 4.2.3.0.1 in broacast_assist spec. | |
174 | */ | |
1812924b | 175 | struct bau_msg_header { |
3ef12c3c | 176 | unsigned int dest_subnodeid:6; /* must be 0x10, for the LB */ |
1812924b | 177 | /* bits 5:0 */ |
b8f7fb13 CW |
178 | unsigned int base_dest_nodeid:15; /* nasid (pnode<<1) of */ |
179 | /* bits 20:6 */ /* first bit in uvhub map */ | |
fa95826f | 180 | unsigned int command:8; /* message type */ |
1812924b CW |
181 | /* bits 28:21 */ |
182 | /* 0x38: SN3net EndPoint Message */ | |
fa95826f | 183 | unsigned int rsvd_1:3; /* must be zero */ |
1812924b CW |
184 | /* bits 31:29 */ |
185 | /* int will align on 32 bits */ | |
fa95826f | 186 | unsigned int rsvd_2:9; /* must be zero */ |
1812924b CW |
187 | /* bits 40:32 */ |
188 | /* Suppl_A is 56-41 */ | |
b8f7fb13 CW |
189 | unsigned int sequence:16;/* message sequence number */ |
190 | /* bits 56:41 */ /* becomes bytes 16-17 of msg */ | |
1812924b CW |
191 | /* Address field (96:57) is never used as an |
192 | address (these are address bits 42:3) */ | |
b8f7fb13 | 193 | |
fa95826f | 194 | unsigned int rsvd_3:1; /* must be zero */ |
1812924b CW |
195 | /* bit 57 */ |
196 | /* address bits 27:4 are payload */ | |
b8f7fb13 CW |
197 | /* these next 24 (58-81) bits become bytes 12-14 of msg */ |
198 | ||
199 | /* bits 65:58 land in byte 12 */ | |
fa95826f | 200 | unsigned int replied_to:1;/* sent as 0 by the source to byte 12 */ |
1812924b | 201 | /* bit 58 */ |
b8f7fb13 CW |
202 | unsigned int msg_type:3; /* software type of the message*/ |
203 | /* bits 61:59 */ | |
204 | unsigned int canceled:1; /* message canceled, resource to be freed*/ | |
205 | /* bit 62 */ | |
206 | unsigned int payload_1a:1;/* not currently used */ | |
207 | /* bit 63 */ | |
208 | unsigned int payload_1b:2;/* not currently used */ | |
209 | /* bits 65:64 */ | |
210 | ||
211 | /* bits 73:66 land in byte 13 */ | |
212 | unsigned int payload_1ca:6;/* not currently used */ | |
213 | /* bits 71:66 */ | |
214 | unsigned int payload_1c:2;/* not currently used */ | |
215 | /* bits 73:72 */ | |
216 | ||
217 | /* bits 81:74 land in byte 14 */ | |
218 | unsigned int payload_1d:6;/* not currently used */ | |
219 | /* bits 79:74 */ | |
220 | unsigned int payload_1e:2;/* not currently used */ | |
1812924b CW |
221 | /* bits 81:80 */ |
222 | ||
fa95826f | 223 | unsigned int rsvd_4:7; /* must be zero */ |
1812924b | 224 | /* bits 88:82 */ |
fa95826f | 225 | unsigned int sw_ack_flag:1;/* software acknowledge flag */ |
1812924b CW |
226 | /* bit 89 */ |
227 | /* INTD trasactions at destination are to | |
228 | wait for software acknowledge */ | |
fa95826f | 229 | unsigned int rsvd_5:6; /* must be zero */ |
1812924b | 230 | /* bits 95:90 */ |
fa95826f | 231 | unsigned int rsvd_6:5; /* must be zero */ |
1812924b | 232 | /* bits 100:96 */ |
b8f7fb13 | 233 | unsigned int int_both:1;/* if 1, interrupt both sockets on the uvhub */ |
1812924b | 234 | /* bit 101*/ |
fa95826f | 235 | unsigned int fairness:3;/* usually zero */ |
1812924b | 236 | /* bits 104:102 */ |
fa95826f | 237 | unsigned int multilevel:1; /* multi-level multicast format */ |
1812924b CW |
238 | /* bit 105 */ |
239 | /* 0 for TLB: endpoint multi-unicast messages */ | |
fa95826f | 240 | unsigned int chaining:1;/* next descriptor is part of this activation*/ |
1812924b | 241 | /* bit 106 */ |
fa95826f | 242 | unsigned int rsvd_7:21; /* must be zero */ |
1812924b CW |
243 | /* bits 127:107 */ |
244 | }; | |
245 | ||
b8f7fb13 CW |
246 | /* see msg_type: */ |
247 | #define MSG_NOOP 0 | |
248 | #define MSG_REGULAR 1 | |
249 | #define MSG_RETRY 2 | |
250 | ||
b194b120 | 251 | /* |
dc163a41 | 252 | * The activation descriptor: |
b194b120 CW |
253 | * The format of the message to send, plus all accompanying control |
254 | * Should be 64 bytes | |
255 | */ | |
dc163a41 | 256 | struct bau_desc { |
b8f7fb13 | 257 | struct bau_target_uvhubmask distribution; |
b194b120 CW |
258 | /* |
259 | * message template, consisting of header and payload: | |
260 | */ | |
1812924b CW |
261 | struct bau_msg_header header; |
262 | struct bau_msg_payload payload; | |
263 | }; | |
264 | /* | |
265 | * -payload-- ---------header------ | |
266 | * bytes 0-11 bits 41-56 bits 58-81 | |
267 | * A B (2) C (3) | |
268 | * | |
269 | * A/B/C are moved to: | |
270 | * A C B | |
271 | * bytes 0-11 bytes 12-14 bytes 16-17 (byte 15 filled in by hw as vector) | |
272 | * ------------payload queue----------- | |
273 | */ | |
274 | ||
275 | /* | |
276 | * The payload queue on the destination side is an array of these. | |
277 | * With BAU_MISC_CONTROL set for software acknowledge mode, the messages | |
278 | * are 32 bytes (2 micropackets) (256 bits) in length, but contain only 17 | |
279 | * bytes of usable data, including the sw ack vector in byte 15 (bits 127:120) | |
280 | * (12 bytes come from bau_msg_payload, 3 from payload_1, 2 from | |
281 | * sw_ack_vector and payload_2) | |
282 | * "Enabling Software Acknowledgment mode (see Section 4.3.3 Software | |
283 | * Acknowledge Processing) also selects 32 byte (17 bytes usable) payload | |
284 | * operation." | |
285 | */ | |
286 | struct bau_payload_queue_entry { | |
287 | unsigned long address; /* signifies a page or all TLB's | |
288 | of the cpu */ | |
289 | /* 64 bits, bytes 0-7 */ | |
290 | ||
291 | unsigned short sending_cpu; /* cpu that sent the message */ | |
292 | /* 16 bits, bytes 8-9 */ | |
293 | ||
294 | unsigned short acknowledge_count; /* filled in by destination */ | |
295 | /* 16 bits, bytes 10-11 */ | |
296 | ||
b8f7fb13 CW |
297 | /* these next 3 bytes come from bits 58-81 of the message header */ |
298 | unsigned short replied_to:1; /* sent as 0 by the source */ | |
299 | unsigned short msg_type:3; /* software message type */ | |
300 | unsigned short canceled:1; /* sent as 0 by the source */ | |
301 | unsigned short unused1:3; /* not currently using */ | |
302 | /* byte 12 */ | |
1812924b | 303 | |
b8f7fb13 CW |
304 | unsigned char unused2a; /* not currently using */ |
305 | /* byte 13 */ | |
306 | unsigned char unused2; /* not currently using */ | |
307 | /* byte 14 */ | |
1812924b CW |
308 | |
309 | unsigned char sw_ack_vector; /* filled in by the hardware */ | |
310 | /* byte 15 (bits 127:120) */ | |
311 | ||
b8f7fb13 CW |
312 | unsigned short sequence; /* message sequence number */ |
313 | /* bytes 16-17 */ | |
314 | unsigned char unused4[2]; /* not currently using bytes 18-19 */ | |
315 | /* bytes 18-19 */ | |
1812924b CW |
316 | |
317 | int number_of_cpus; /* filled in at destination */ | |
318 | /* 32 bits, bytes 20-23 (aligned) */ | |
319 | ||
320 | unsigned char unused5[8]; /* not using */ | |
321 | /* bytes 24-31 */ | |
322 | }; | |
323 | ||
4faca155 CW |
324 | struct msg_desc { |
325 | struct bau_payload_queue_entry *msg; | |
326 | int msg_slot; | |
327 | int sw_ack_slot; | |
328 | struct bau_payload_queue_entry *va_queue_first; | |
329 | struct bau_payload_queue_entry *va_queue_last; | |
330 | }; | |
331 | ||
332 | struct reset_args { | |
333 | int sender; | |
334 | }; | |
335 | ||
336 | /* | |
337 | * This structure is allocated per_cpu for UV TLB shootdown statistics. | |
338 | */ | |
339 | struct ptc_stats { | |
340 | /* sender statistics */ | |
341 | unsigned long s_giveup; /* number of fall backs to IPI-style flushes */ | |
342 | unsigned long s_requestor; /* number of shootdown requests */ | |
343 | unsigned long s_stimeout; /* source side timeouts */ | |
344 | unsigned long s_dtimeout; /* destination side timeouts */ | |
345 | unsigned long s_time; /* time spent in sending side */ | |
346 | unsigned long s_retriesok; /* successful retries */ | |
347 | unsigned long s_ntargcpu; /* total number of cpu's targeted */ | |
450a007e CW |
348 | unsigned long s_ntargself; /* times the sending cpu was targeted */ |
349 | unsigned long s_ntarglocals; /* targets of cpus on the local blade */ | |
350 | unsigned long s_ntargremotes; /* targets of cpus on remote blades */ | |
351 | unsigned long s_ntarglocaluvhub; /* targets of the local hub */ | |
352 | unsigned long s_ntargremoteuvhub; /* remotes hubs targeted */ | |
4faca155 CW |
353 | unsigned long s_ntarguvhub; /* total number of uvhubs targeted */ |
354 | unsigned long s_ntarguvhub16; /* number of times target hubs >= 16*/ | |
355 | unsigned long s_ntarguvhub8; /* number of times target hubs >= 8 */ | |
356 | unsigned long s_ntarguvhub4; /* number of times target hubs >= 4 */ | |
357 | unsigned long s_ntarguvhub2; /* number of times target hubs >= 2 */ | |
358 | unsigned long s_ntarguvhub1; /* number of times target hubs == 1 */ | |
359 | unsigned long s_resets_plug; /* ipi-style resets from plug state */ | |
360 | unsigned long s_resets_timeout; /* ipi-style resets from timeouts */ | |
361 | unsigned long s_busy; /* status stayed busy past s/w timer */ | |
362 | unsigned long s_throttles; /* waits in throttle */ | |
363 | unsigned long s_retry_messages; /* retry broadcasts */ | |
364 | unsigned long s_bau_reenabled; /* for bau enable/disable */ | |
365 | unsigned long s_bau_disabled; /* for bau enable/disable */ | |
366 | /* destination statistics */ | |
367 | unsigned long d_alltlb; /* times all tlb's on this cpu were flushed */ | |
368 | unsigned long d_onetlb; /* times just one tlb on this cpu was flushed */ | |
369 | unsigned long d_multmsg; /* interrupts with multiple messages */ | |
370 | unsigned long d_nomsg; /* interrupts with no message */ | |
371 | unsigned long d_time; /* time spent on destination side */ | |
372 | unsigned long d_requestee; /* number of messages processed */ | |
373 | unsigned long d_retries; /* number of retry messages processed */ | |
374 | unsigned long d_canceled; /* number of messages canceled by retries */ | |
375 | unsigned long d_nocanceled; /* retries that found nothing to cancel */ | |
376 | unsigned long d_resets; /* number of ipi-style requests processed */ | |
377 | unsigned long d_rcanceled; /* number of messages canceled by resets */ | |
378 | }; | |
379 | ||
b194b120 | 380 | /* |
b8f7fb13 | 381 | * one per-cpu; to locate the software tables |
b194b120 | 382 | */ |
1812924b | 383 | struct bau_control { |
dc163a41 | 384 | struct bau_desc *descriptor_base; |
1812924b CW |
385 | struct bau_payload_queue_entry *va_queue_first; |
386 | struct bau_payload_queue_entry *va_queue_last; | |
b8f7fb13 CW |
387 | struct bau_payload_queue_entry *bau_msg_head; |
388 | struct bau_control *uvhub_master; | |
389 | struct bau_control *socket_master; | |
712157aa | 390 | struct ptc_stats *statp; |
b8f7fb13 | 391 | unsigned long timeout_interval; |
e8e5e8a8 | 392 | unsigned long set_bau_on_time; |
b8f7fb13 | 393 | atomic_t active_descriptor_count; |
b8f7fb13 CW |
394 | int plugged_tries; |
395 | int timeout_tries; | |
396 | int ipi_attempts; | |
397 | int conseccompletes; | |
50fb55ac | 398 | int baudisabled; |
e8e5e8a8 | 399 | int set_bau_off; |
b8f7fb13 CW |
400 | short cpu; |
401 | short uvhub_cpu; | |
402 | short uvhub; | |
403 | short cpus_in_socket; | |
404 | short cpus_in_uvhub; | |
405 | unsigned short message_number; | |
406 | unsigned short uvhub_quiesce; | |
407 | short socket_acknowledge_count[DEST_Q_SIZE]; | |
408 | cycles_t send_message; | |
b8f7fb13 CW |
409 | spinlock_t uvhub_lock; |
410 | spinlock_t queue_lock; | |
e8e5e8a8 CW |
411 | /* tunables */ |
412 | int max_bau_concurrent; | |
413 | int max_bau_concurrent_constant; | |
414 | int plugged_delay; | |
415 | int plugsb4reset; | |
416 | int timeoutsb4reset; | |
417 | int ipi_reset_limit; | |
418 | int complete_threshold; | |
419 | int congested_response_us; | |
420 | int congested_reps; | |
421 | int congested_period; | |
422 | cycles_t period_time; | |
423 | long period_requests; | |
1812924b CW |
424 | }; |
425 | ||
b8f7fb13 | 426 | static inline int bau_uvhub_isset(int uvhub, struct bau_target_uvhubmask *dstp) |
1812924b | 427 | { |
b8f7fb13 | 428 | return constant_test_bit(uvhub, &dstp->bits[0]); |
1812924b | 429 | } |
b8f7fb13 | 430 | static inline void bau_uvhub_set(int uvhub, struct bau_target_uvhubmask *dstp) |
1812924b | 431 | { |
b8f7fb13 | 432 | __set_bit(uvhub, &dstp->bits[0]); |
1812924b | 433 | } |
b8f7fb13 CW |
434 | static inline void bau_uvhubs_clear(struct bau_target_uvhubmask *dstp, |
435 | int nbits) | |
1812924b CW |
436 | { |
437 | bitmap_zero(&dstp->bits[0], nbits); | |
438 | } | |
b8f7fb13 CW |
439 | static inline int bau_uvhub_weight(struct bau_target_uvhubmask *dstp) |
440 | { | |
441 | return bitmap_weight((unsigned long *)&dstp->bits[0], | |
442 | UV_DISTRIBUTION_SIZE); | |
443 | } | |
1812924b CW |
444 | |
445 | static inline void bau_cpubits_clear(struct bau_local_cpumask *dstp, int nbits) | |
446 | { | |
447 | bitmap_zero(&dstp->bits, nbits); | |
448 | } | |
449 | ||
1812924b CW |
450 | #define cpubit_isset(cpu, bau_local_cpumask) \ |
451 | test_bit((cpu), (bau_local_cpumask).bits) | |
452 | ||
b194b120 CW |
453 | extern void uv_bau_message_intr1(void); |
454 | extern void uv_bau_timeout_intr1(void); | |
1812924b | 455 | |
b8f7fb13 CW |
456 | struct atomic_short { |
457 | short counter; | |
458 | }; | |
459 | ||
460 | /** | |
461 | * atomic_read_short - read a short atomic variable | |
462 | * @v: pointer of type atomic_short | |
463 | * | |
464 | * Atomically reads the value of @v. | |
465 | */ | |
466 | static inline int atomic_read_short(const struct atomic_short *v) | |
467 | { | |
468 | return v->counter; | |
469 | } | |
470 | ||
471 | /** | |
472 | * atomic_add_short_return - add and return a short int | |
473 | * @i: short value to add | |
474 | * @v: pointer of type atomic_short | |
475 | * | |
476 | * Atomically adds @i to @v and returns @i + @v | |
477 | */ | |
478 | static inline int atomic_add_short_return(short i, struct atomic_short *v) | |
479 | { | |
480 | short __i = i; | |
481 | asm volatile(LOCK_PREFIX "xaddw %0, %1" | |
482 | : "+r" (i), "+m" (v->counter) | |
483 | : : "memory"); | |
484 | return i + __i; | |
485 | } | |
486 | ||
05e4d316 | 487 | #endif /* _ASM_X86_UV_UV_BAU_H */ |